SDO HMI 2014-10-16 21:00:30 UT
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing)
(It is recommended to set high resolution on your display!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 17.28 | 0.00 | 9.56 | 15.23 | 359.89 | 24.60 | 294.12 | 0.4399 | -442.8 | -494.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-10-16 21:00:30 UT
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing) (It is recommended to set high resolution on your display!) |
| spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 4.28 | 0.00 | 2.45 | 14.04 | 4.73 | 29.45 | 288.17 | 0.5040 | -346.0 | -391.1 | |
| 0.00 | 1.13 | 0.00 | 0.64 | 14.38 | 2.64 | 27.35 | 289.86 | 0.4752 | -707.0 | -564.8 | |
| 0.00 | 0.87 | 0.00 | 0.49 | 17.55 | 1.15 | 25.87 | 297.22 | 0.4697 | -471.0 | -443.1 | |
| 0.00 | 1.05 | 0.00 | 0.58 | 14.14 | 0.58 | 25.29 | 290.52 | 0.4442 | -691.0 | -619.3 | |
| 0.00 | 2.53 | 0.00 | 1.41 | 16.20 | 0.75 | 25.46 | 294.77 | 0.4565 | -693.0 | -587.9 | |
| 0.00 | 4.28 | 0.00 | 2.32 | 15.93 | 357.61 | 22.32 | 296.71 | 0.4106 | -680.0 | -753.0 | |
| 0.00 | 1.92 | 0.00 | 1.04 | 15.48 | 357.39 | 22.10 | 295.88 | 0.4048 | -705.0 | -592.0 | |
| 0.00 | 1.22 | 0.00 | 0.63 | 14.81 | 347.22 | 11.93 | 308.57 | 0.2569 | 751.0 | 572.8 | |
| Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
|
that the umbra consists of fragmented regions which cannot be separated without losing umbral area. In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2. |
||
| Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
|
that several umbras have a common penumbra, e.g. -7 means that the given umbra shares a penumbra with umbra No.7, and the WS value is indicated at No.7. |
||
| Corr. U | - Corrected umbra area in millionths of solar hemisphere, for negative values see above | |
| Corr. WS | - Corrected whole spot area in millionths of solar hemisphere, for negative values see above | |
| B | - Heliographic latitude B; positive: North, negative: South | |
| L | - Heliographic longitude L | |
| LCM | - Longitudinal distance from the Sun's central meridian | |
| Pos. angle | - Position angle | |
| r | - Distance from the centre of Sun's disc in terms of Sun's radius | |
| MU | - Mean magnetic field within the umbra contour averaged the pixel values with sign. | |
| MP | - Mean magnetic field within the penumbra contour averaged the pixel values with sign. | |